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MiaSpeedy

Honda S660 Battery Struggles: Warning Signs & Quick Help

Warning light in the speedometer of the vehicle

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Weak battery when starting the engine

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Car won't start

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Dim or flickering lights

Hey everyone! My 2020 Honda S660 (86K km) is giving me a headache lately. The battery seems super weak, engine barely cranks and the lights are all dim. There's also a warning light on the dash. Had a not-so-great experience with my previous mechanic, so I'm a bit hesitant about where to take it. Has anyone dealt with similar electrical issues in their S660? Would love to hear about reliable mechanics you've worked with and what the actual problem turned out to be. Thanks in advance!

6 comment(s)


MeyerDieter

Hey there! I had very similar issues with my 2017 Honda CR-Z last year. The symptoms you're describing match exactly what I experienced, weak cranking, dim lights, and warning lights popping up. Took it to the garage and turns out it wasn't just a simple battery issue. The control unit had a faulty cable connection that was disrupting the entire BUS system communication. These systems control pretty much all the electronic components in modern cars. It was a serious problem that needed immediate attention because it could've led to complete electrical failure. The mechanic had to replace several connectors and re-establish proper communication between the control units. The repair wasn't just swap-and-go, they had to do proper diagnostics to pinpoint the exact connection issues, plus some reprogramming after fixing the connections. If you're seeing these symptoms, better get it checked soon. Not something you want to leave unattended, especially in a modern car with complex electronics like the S660.

MiaSpeedy (Author)

Thanks for sharing your experience with the CR-Z! This is really helpful since the symptoms match what I'm dealing with. Quick question, do you remember roughly how much you ended up paying for the whole repair job? Also, has everything been working smoothly since they fixed it, or have you noticed any other electrical quirks?

MeyerDieter

Hey again! Yes, absolutely, I paid exactly 260€ to fix that faulty cable connection issue in my CR-Z, and I'm happy to report it's been running like a charm ever since! Not a single electrical problem or warning message since the repair, which was about 8 months ago now. The mechanic really knew what they were doing with the BUS system diagnostics, and once they sorted out that dodgy connection to the control unit, all those annoying symptoms, you know, the weak cranking and dim lights, completely disappeared. The warning light hasn't shown its face again either! I was actually pretty relieved the cost wasn't higher, given how complex these electrical systems can be. Definitely worth every penny to get it properly sorted rather than letting it develop into something more serious. Trust me, once you get yours fixed, you'll notice the difference straight away. The car just feels more 'alive' if you know what I mean, proper power when starting, bright lights, everything working as it should. It's like giving it a new lease of life!

MiaSpeedy (Author)

Let me wrap this up as: Thanks everyone! Just wanted to update you on what happened with my S660. Finally got it checked out and you were spot on, it wasn't just the battery! Had similar issues to what you described with your CR-Z. The mechanic found a faulty connection in the control unit that was messing with the whole electrical system. The repair came to about 280€, a bit more than I expected but totally worth it. The car's running beautifully now, starts right up with no hesitation, lights are bright again, and that pesky warning light is gone. Such a relief! Honestly, I'm just glad I didn't wait any longer to get it fixed. The mechanic said it could've gotten much worse if I'd kept driving it like that. Thanks again for pushing me to get it checked out properly, your advice really helped me avoid what could've been a much bigger headache! Really appreciate everyone's help on this one. It's great to have the car back to its normal self!

Taino1979

Greetings, what is the problem with my scanner, is it a big problem or does it need to be taken to a mechanic urgently?

(Translated from Spanish)

CarlyMechanic

@Taino1979

Greetings, what is the problem with my scanner, is it a big problem or does it need to be taken to a mechanic urgently?

If your scanner is not working properly, start by checking the basics: ensure all connections are secure and the scanner is compatible with your vehicle. If it's a software issue, try updating the scanner's firmware. If the problem persists, it might be worth consulting a professional to ensure accurate diagnostics. Let me know how it goes or if you have any further questions!

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